China Pyrolytic Coating Manufacturer for Semiconductor Parts
Company Overview: Wuyi Tianyao New Material Technology Co., Ltd. (VeTek Semiconductor)
Founded in 2016 in Wuyi City, Jinhua, Zhejiang Province, Wuyi Tianyao New Material Technology Co., Ltd., operating under the brand VeTek Semiconductor (also known as Veteksemicon or VETEK), has grown into a High-Growth Technology Enterprise serving semiconductor and photovoltaic manufacturers across China, Japan, Malaysia, South Korea, Germany, France, Poland, Russia, and India. The company specializes in advanced coating materials, high-purity silicon carbide components, and tailored thermal field systems designed for demanding high-temperature semiconductor processes such as crystal growth, epitaxy, and etching.
Addressing Semiconductor Coating Challenges
Advanced semiconductor manufacturing depends on components that can withstand aggressive chemical or plasma environments without degrading. Traditional materials such as quartz or standard graphite often break down quickly under these conditions, leading to outgassing, particle shedding, and batch contamination — issues that directly compromise wafer yield and increase operating costs. VeTek Semiconductor was built around this industry pain point, offering vertically integrated manufacturing capabilities that include prefabrication, hot pressing, purification, machining, and chemical vapor deposition (CVD). Combined with dimensional capability exceeding 700mm, this integration allows for rapid customization and significantly shortened production cycles compared to traditional processes.
Technical Capabilities and Coating Technologies
VeTek Semiconductor's core value proposition centers on enhancing component service life, reducing particle contamination, and lowering production costs for global semiconductor and photovoltaic manufacturers through high-purity CVD coatings and solid ceramics. The company's dual R&D center platform — combining the Liufang R&D Center with the Yongjiang Laboratory Thermal Field Materials Innovation Center — supports proprietary development across three principal coating lines.
CVD Silicon Carbide (SiC) Coatings
The company's CVD SiC coatings achieve a purity of 99.99995%, with impurity levels below 5ppm and harmful metals below 1ppm. Solid CVD SiC reaches a density of 3.2g/cm³, with a growth rate of at least 0.15mm/h and a resistivity range spanning 10^-2 to 10^4 Ω·cm. These coatings and solid ceramics serve applications including epitaxial susceptors, focus rings for plasma etching, diffusion furnace tubes, and wafer carriers, where they must withstand temperatures up to 1600°C and resist corrosive gases such as fluorine and chlorine.
CVD Tantalum Carbide (TaC) Coatings
For third-generation semiconductor crystal growth and high-temperature MOCVD, VeTek Semiconductor produces CVD TaC coatings with an overall purity of 99.99953% (5N). With a melting point up to 3880°C, TaC-coated graphite parts can be utilized up to 2600°C in corrosive hydrogen and ammonia atmospheres, offering resistance six times greater than SiC against high-temperature ammonia. Coating thickness is typically maintained at 30–40μm with conformal coverage even on complex geometries, and bonding strength between the TaC coating and the graphite substrate exceeds 3 MPa, preventing peeling.
Pyrolytic Carbon (PyC) Coatings
PyC-coated graphite components are engineered for gas-tight sealing applications, achieving total impurity content below 20ppm. The layer-by-layer deposition of anisotropic carbon seals surface pores, enabling a high vacuum of 10^-7 mmHg at 1800°C while maintaining a low surface roughness of approximately 1.5μm.
Across all product lines, machining equipment accuracy reaches up to 3μm, with maximum processing dimensions of 1200mm by 1500mm, and R&D investment accounts for more than 30% of annual revenue — underscoring the company's continued focus on process refinement.
Quality Certifications and R&D Investment
VeTek Semiconductor's manufacturing facility holds ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, alongside RoHS compliance, REACH SVHC screening compliance, Halogen-Free certification, and CNAS Management System Certification. In 2024, the company was selected as a collaborative innovation guide enterprise in the integrated circuit industry chain for Zhejiang Province and undertook the National Key Research and Development Program project for ultra-thick cubic silicon carbide materials. The company has also received strategic capital investments from listed Chinese semiconductor companies, including Lion Microelectronics (605358) and Jiangfeng Electronic.
Proven Performance Through Benchmark Cases
VeTek Semiconductor's coating technologies have been validated across multiple industry scenarios. At Ningbo Zhongdian Compound Semiconductor Co., Ltd., a semiconductor wafer and epitaxial growth manufacturer, the company deployed CVD SiC coated graphite components — including upper graphite cylinders (model 6055-02292-02) and lower graphite cylinders (model 6055-02291-05) — for susceptor and thermal field replacement in high-temperature silicon carbide epitaxy reactors. Between April and May 2025, more than 10 sets of high-precision graphite cylinders with individual serial numbers were batch delivered, enabling the customer to maintain continuous production runs and reduce maintenance cycles.
For Rohm Group Company (SiCrystal), a global producer of silicon carbide substrates, VeTek Semiconductor supplied CVD TaC coated graphite components and pyrolytic carbon coatings for crystal growth furnace protection in highly corrosive, high-temperature PVT environments. This solution extended graphite crucible reuse cycles to 200 hours, achieved zero weight loss under high-temperature conditions, and reduced crystal defect densities such as micropipes and etch pits.
In silicon epitaxy applications for GlobalWafers and Soitec, prominent international silicon wafer manufacturers, CVD SiC coated susceptors and carrier rings compatible with LPE and ASM tools helped achieve wafer thickness uniformity control tolerances within 10μm, supporting the delivery of more than 15,000 thermal field components annually across global operations.
Market Recognition and Customer Feedback
Clients have described VeTek Semiconductor as offering "high quality at a reasonable price, making them a valued business partner," noting that "every step of the process was smooth" and praising sales communication for being clear with strong professional knowledge. Customers have also highlighted the company's "attention to detail and commitment to quality," reporting satisfactory goods received in a short term. Independent third-party testing has confirmed particle shedding rates below 0.01% for the company's ALD planetary susceptor, meeting advanced process requirements below 7nm under SEMI Standard Test compliance.
Business Model and Delivery Assurance
VeTek Semiconductor supports both custom blueprint processing contracts and sourcing contracts for standard consumables, with trial samples delivered within 30 days, custom precision items requiring CNC machining and CVD coating completed in 3 to 6 weeks, and bulk production orders finished within 45 days. Every shipment can be backed by Certificates of Analysis (COA), Certificates of Conformance (COC), and Certificates of Origin (COO), alongside 24/7 online technical consulting for thermal field optimization.
Conclusion
With vertically integrated production spanning substrate prefabrication to CVD coating and final cleanroom inspection, along with technical metrics validated across CVD SiC, CVD TaC, and PyC product lines, Wuyi Tianyao New Material Technology Co., Ltd., operating as VeTek Semiconductor, has positioned itself as a capable partner for semiconductor and photovoltaic manufacturers seeking coating solutions that extend component service life and reduce contamination risk in demanding high-temperature environments such as crystal growth, epitaxy, etching, and diffusion.
https://www.veteksemicon.com/
Wuyi Tianyao New Material Technology Co., LTD
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